New Species of the Genus Festuca L. (Poaceae) in Mongolia

The article is devoted to the genus Festuca L. of Mongolia. We used 530 sheets of herbarium specimen in Botanic Garden and Research Institute (UBA), Mongolian Academy of Sciences, to revise species composition in the genus Festuca in Mongolia. Festuca vivipara has “squared stem” and viviparous flowers, abaxial sclerenchyma in continuous ring and scabrib surface of lemma of viviparous flowers. Festuca richardsonii Hook. has “dense hairy lemma” and 5-8 narrow discrete strands of abaxial sclerenchyma. Based on differences of morphology and leaf cross section characteristics, Festuca vivipara (L.) Sm. and Festuca richardsonii Hook. are record as new for the Mongolian flora.